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31

Jan 23, 2014
01/14

by
Diarmuid Ó Murchú

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Topics: Jesus Christ., Jesus Christ -- Person and offices., Quantum theory., Evolution -- Religious aspects...

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5.0

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c1983

Topics: s and indexes, ce -- Philosophy, Quantum theory

The project goals are to fabricate qubits in quantum dots in Si/SiGe modulation-doped heterostructures, to characterize and understand those structures, and to develop the technology necessary for a Si/SiGe quantum dot quantum computer. The physical qubit in our approach is the spin of an electron confined in a top-gated silicon quantum dot in a Si/SiGe modulation-doped heterostructure. Operations on such a qubit may be performed by controlling the voltages on gates in-between neighboring...

Topics: DTIC Archive, WISCONSIN UNIV-MADISON BOARD OF REGENTS/RESEARCH SPONSORED PROGRAMS, *GERMANIUM,...

The noise (variance squared) of a component of the electromagnetic field - considered as a quantum oscillator - in the vacuum is equal to one half, in appropriate units (taking Planck's constant and the mass and frequency of the oscillator all equal to 1). A practical definition of a squeezed state is one for which the noise is less than the vacuum value - and the amount of squeezing is determined by the appropriate ratio. Thus the usual coherent (Glauber) states are not squeezed, as they...

Topics: NASA Technical Reports Server (NTRS), AUTOMORPHISMS, ELECTROMAGNETIC FIELDS, HARMONIC OSCILLATORS,...

The performance of parametric conversion in achieving number amplification and duplication is analyzed. It is shown that the effective maximum gains G(sub *) remain well below their integer ideal values, even for large signals. Correspondingly, one has output Fano factors F(sub *) which are increasing functions of the input photon number. On the other hand, in the inverse (deamplifier/recombiner) operating mode quasi-ideal gains G(sub *) and small factors F(sub *) approximately equal to 10...

Topics: NASA Technical Reports Server (NTRS), AMPLIFICATION, NONLINEAR OPTICS, PARAMETRIC AMPLIFIERS,...

8
8.0

Dec 23, 2019
12/19

by
Bax, Ad, 1956-

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200 pages : 25 cm

Topics: SPECTROSCOPY, NUCLEAR MAGNETIC RESONANCE, COMPUTER HARDWARE, SPECTROMETERS, LIQUIDS, COMPUTER...

Atomic supersymmetry provides an analytical effective-potential model useful for describing certain aspects of Rydberg atoms. Experiments have recently demonstrated the existence of Rydberg wave packets localized in the radial coordinated with p-state angular distribution. This paper shows how atomic supersymmetry can be used to treat radial Rydberg wave packets via a particular analytical type of squeezed state, called a radial squeezed state.

Topics: NASA Technical Reports Server (NTRS), SQUEEZED STATES (QUANTUM THEORY), SUPERSYMMETRY, WAVE...

The occupied regions of momentum space in graphite are confined to elongated volumes near the hexagonal Brillouin zone edges. The elongation is along the hexagonal axis (c-axis), so that cross sectional areas perpendicular to that axis are very small. When magnetic fields are applied parallel to the c-axis, only the n = 0 Landau levels remain below the Fermi energy for fields above 7 tesla. The energy bands in graphite can be described by a set of seven parameters (including the Fermi energy as...

Topics: NASA Technical Reports Server (NTRS), GRAPHITE, QUANTUM THEORY, SINGLE CRYSTALS, BRILLOUIN ZONES,...

27
27

Jan 10, 2013
01/13

by
Jenny McPhee

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Topics: Women journalists -- Fiction., Motion picture actors and actresses -- Fiction., Quantum theory --...

130
130

Jun 26, 2012
06/12

by
Kaku, Michio

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Includes bibliographical references (pages 356-393) and index

Topics: Science, Science, Technological forecasting, Quantum theory, Molecular biology, Computers and...

This conference publication contains the proceedings of the Second International Workshop on Squeezed States and Uncertainty Relations held in Moscow, Russia, on 25-29 May 1992. The purpose of this workshop was to study possible applications of squeezed states of light. The Workshop brought together many active researchers in squeezed states of light and those who may find the concept of squeezed states useful in their research, particularly in understanding the uncertainty relations. It was...

Topics: NASA Technical Reports Server (NTRS), CONFERENCES, HEISENBERG THEORY, QUANTUM MECHANICS, QUANTUM...

2
2.0

Jul 25, 2020
07/20

by
Schürmann, Michael, 1955-

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146 pages ; 24 cm

Topics: Quantum theory -- Mathematics, Stochastic analysis, Théorie quantique -- Mathématiques, Analyse...

6
6.0

Feb 8, 2021
02/21

by
McPhee, Jenny

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245 p. ; 22 cm

Topics: Women journalists -- Fiction, Motion picture actors and actresses -- Fiction, Quantum theory --...

How efficiently can the ground state of a local Hamiltonian be computed? This is a question that lies at the heart of an emerging area called quantum Hamiltonian complexity, that addresses fundamental issues in both quantum complexity theory and condensed matter physics. Of particular importance are 1D Hamiltonians. We give a new combinatorial approach to proving the area law for 1D systems via the detectability lemma, in the process exponentially improving on Hastings' bounds in the...

Topics: DTIC Archive, CALIFORNIA UNIV BERKELEY, *QUANTUM THEORY, HAMILTONIAN FUNCTIONS

This is the 2nd quarterly Technical Progress Report summarizing progress on the Sea-optimized Quantum Key Exchange (SeaQuaKE) project, which is led by Applied Communications Sciences under the ONR Free Space Optical Quantum Key Distribution Special Notice (13-SN-0004 under ONRBAA13-001). In this technical report, we describe details of the hyperentanglement source architecture we propose for use in a maritime quantum communications system, including some of the wavelength-dependent...

Topics: DTIC Archive, APPLIED COMMUNICATION SCIENCES BASKING RIDGE NJ, *COMMUNICATION AND RADIO SYSTEMS,...

A single hole spin in a semiconductor quantum dot has emerged as a quantum bit that is potentially superior to an electron spin. A key feature of holes is that they have a greatly reduced hyperfine interaction with nuclear spins, which is one of the biggest difficulties in working with an electron spin. It is now essential to show that holes are viable for quantum information processing by demonstrating fast quantum gates and scalability. To this end, we have developed InAs/GaAs quantum dots...

Topics: DTIC Archive, NAVAL RESEARCH LAB WASHINGTON DC, *QUANTUM DOTS, ELECTRONS, GALLIUM ARSENIDES,...

The physical mechanisms which give rise to conversion gain in SIS quasiparticle mixers are studied. It is shown that the S-shape tunneling structure at the gap voltage of the I-V curve is essential in achieving conversion gain. In the development of SIS quasiparticle mixers, a new approach is used to analyse the embedding network of the mixing experiment. This method as described in this paper has the advantage over conventional methods that no separate measurements are necessary. In order to...

Topics: DTIC Archive, Shen,T M, CALIFORNIA UNIV BERKELEY DEPT OF PHYSICS, *HETERODYNING, *QUANTUM THEORY,...

Partial Contents: On the Application of Kramers' Theory to Elementary Chemical Reactions, Photoisomerization in Dense Gases and Liquids, High Pressure NMR Studies of the Kramers Turnover for Reactions in Liquid Solutions, Femtosecond Studies of the Photoisomerization of cis-Stilbene in Solution, Classical and Quantum Models of Activationless Reaction Dynamics, Solvent Polarity Dependent Formation Dynamics of TICT States. I. Differential Solvatokinetics, Proton Delocalization and Thermally...

Topics: DTIC Archive, VCH WEINHEIM (GERMANY F R), *QUANTUM CHEMISTRY, *REACTION KINETICS, STOCHASTIC...

This project consists of a collaborative synthetic, processing, physical characterization, and theoretical program aimed at the rational design, construction, evaluation, and fundamental understanding of new types of maximum- performance molecule/polymer-based materials exhibiting high second-order (CHI(2)) optical nonlinearities. Areas of emphasis include poled chromophore-functionalized glassy polymers, poled chromophore-embedded crosslinkable matrices, chromophoric self-assembled...

Topics: DTIC Archive, Marks, T J, NORTHWESTERN UNIV EVANSTON IL, *OPTICAL MATERIALS, *NONLINEAR OPTICS,...

The fiber-optic transmission of Laguerre-Gaussian photons carries the potential for removing the inconvenience of alignment and space required in free-space experimentation while introducing a severity of power loss caused by coupling inefficiency as the profile propagates through the fiber-optic components. This experimentation was planned to gain some insight into the behavior of the Laguerre-Gaussian profile when transmitted through fiber-optic channels in order to have the ability to set up...

Topics: DTIC Archive, Mahanta, Monisha K, STATE UNIV OF NEW YORK COLL AT ONEONTA, *FIBER OPTICS...

Quantum cascade lasers (QCL's) employ the mid- and far-infrared intersubband radiative transitions available in semiconducting heterostructures. Through the precise design and construction of these heterostructures the laser characteristics and output frequencies can be controlled. When fabricated, QCL's offer a lightweight and portable alternative to traditional laser systems which emit in this frequency range. The successful operation of these devices strongly depends on the effects of...

Topics: DTIC Archive, NATIONAL GROUND INTELLIGENCE CENTER CHARLOTTESVILLE VA, *ELECTRON TRANSPORT,...

The topics covered are Solid State Device Research, Quantum Electronics, Materials Research, Microelectronics, and Analog Device Technology. Keywords: Solid state devices, Quantum electronics, Materials research, Microelectronics, Analog device technology, Ion implantation, Optical modulators; Lasers; Quantum well effects; Nonlinear optics; Charge coupled devices; Microwave semiconductor; Devices; Superconductors; Neural networks.

Topics: DTIC Archive, McWhorter, Alan L, MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB, *QUANTUM...

The purpose of this program is to develop the metalorganic chemical vapor deposition (MOCVD) epitaxial growth process for semiconductor heterostructure laser diode arrays. These laser diode arrays are intended to be used as an optical pump for solid state yttrium aluminum garnet (YAG) lasers. In particular, linear uniform arrays having high output power, high efficiency, low laser threshold current density and precisely controlled emission wavelength are required. There are three technical...

Topics: DTIC Archive, Coleman, James J, ILLINOIS UNIV AT URBANA DEPT OF ELECTRICAL AND COMPUTER...

An extensive investigation is presented on the role of direct exchange as the mechanism responsible for ferromagnetism. The direct exchange integral J which arises in Heisenberg's theory of ferromagnetism and which bas been a subject of considerable speculation and controversy (particularly concerning its sign behavior as a function of internuclear separation) is considered for several cases for which (as Lowdin has shown) J is rigorously defined. (1) A pair of atoms with a single electron per...

Topics: DTIC Archive, FREEMAN, A J, ARMY MATERIALS RESEARCH AGENCY WATERTOWN MA, *ATOMIC ORBITALS,...

2
2.0

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vi, 373 p. : 25 cm

Topics: Probabilities -- Congresses, Quantum theory -- Congresses, Stochastic processes -- Congresses,...

9
9.0

May 4, 2019
05/19

by
Zhao, Kaihua

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454 pages : 23 cm

Topic: Quantum theory

5
5.0

Jan 23, 2021
01/21

by
McKee, John W

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ix, 86 pages : 28 cm

Topics: Quantum theory, Relativity, Neurosciences, Exploration of outer space, Outer space -- Exploration,...

5
5.0

Nov 12, 2020
11/20

by
Miller, John A., 1946-

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302 pages ; 22 cm

Topics: Oakland Athletics (Baseball team) -- Fiction, Oakland Athletics (Baseball team), Heisenberg...

1
1.0

Jun 19, 2020
06/20

by
Inoue, Atsushi, 1944-

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viii, 241 p. ; 24 cm

Topics: Von Neumann algebras, Quantum theory, Operator algebras

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c1983

Topics: s and indexes, ce -- Philosophy, Quantum theory

Recent advances in quantum information theory have inspired an explosion of interest in new quantum algorithms for solving hard computational (quantum and non-quantum) problems. The basic principle of quantum computation is that the quantum properties can be used to represent structure data, and that quantum mechanisms can be devised and built to perform operations with this data. Three basic non-classical properties of quantum mechanics superposition, entanglement, and direct-product...

Topics: NASA Technical Reports Server (NTRS), QUANTUM COMPUTERS, VERY LARGE SCALE INTEGRATION, DIGITAL...

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Host Berkeley Kid and the Twit Wit Radio panel with Alexa, Siri, magic bullet theory, quantum computers, John F. Kennedy Jr., self surveillance, collectivism, individualism, Richard Feinman, Lewis Black, Kim Kardashian, Office of Naval Intelligence, Vladimir Putin, Chelsea Clinton, Bolsheviks, monopoly capitalism, totalitarianism, collectivism, William Binney, home schooling, un-schooling, quantum mechanics, quantum physics, quantum theory, Schrodinger's cat, fake moon landing, flat earth,...

Topics: Alexa, Siri, magic bullet theory, quantum computers, John F. Kennedy Jr., self surveillance,...

Electron systems which have low dimensional properties have been constructed by squeezing the motion in zero, one, or two-directions. An isolated quantum dot is modeled by a potential box with delta-profiled, penetrable potential walls embedded in a large outer box with infinitely high potential walls which represent the world function with respect to vacuum. We show the smooth crossover of the density of states from the three-dimensional to the quasi-zero dimensional electron gas.

Topics: NASA Technical Reports Server (NTRS), COMPRESSING, ELECTRON TRANSITIONS, MIS (SEMICONDUCTORS),...

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10.0

Jul 24, 2019
07/19

by
Moravcsik, Michael J

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viii, 154 p. 22 cm

Topics: Nuclear reactions, Particles (Nuclear physics), Quantum theory

5
5.0

Jul 27, 2019
07/19

by
Hove, L. van (Léon)

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249 p. 23 cm

Topic: Quantum theory

The program of the grant (evolution and survival of quantum entanglement) was advanced by extending to open-system relevance an important lead reported earlier (provided by Jaynes-Cummings closed-system modelling). We report success in tracking the movement of quantum entanglement. Reversals of the entanglement sudden death (ESD) effect are now also open to study in the case of revival effects in coherent-state quantum fields. A new finding is the discovery of a way to hide entanglement...

Topics: DTIC Archive, ROCHESTER UNIV NY, *QUANTUM OPTICS, *QUANTUM THEORY, MARKOV PROCESSES, MEMORY...

A discussion of Einstein's scientific achievements for the 100th anniversary of his birth is presented. His works dealing with thermodynamics are described, along with his quantum theory of radiation. Most of the article discusses his general theory of relativity.

Topics: NASA Technical Reports Server (NTRS), QUANTUM THEORY, RADIATION LAWS, RELATIVITY, SCIENTISTS,...

For over 25 years, NASA has supported the development of space radiation transport models for shielding applications. The NASA space radiation transport model now predicts dose and dose equivalent in Earth and Mars orbit to an accuracy of plus or minus 20%. However, because larger errors may occur in particle fluence predictions, there is interest in further assessments and improvements in NASA's space radiation transport model. In this paper, we consider the effects of the isotopic composition...

Topics: NASA Technical Reports Server (NTRS), FLUENCE, GALACTIC COSMIC RAYS, PRIMARY COSMIC RAYS, ISOTOPES,...

As a consequence of the formal difficulties in explaining resonances as solutions of the general Schroedinger equation, the procedure developed here exploits some fairly general properties of a semigroup, appropriate for the decay. A feature, which in this context may be named as 'the paradox of resonance', will be analyzed to some extent. By generalizing the time development one can, however, formulate the resonant state in a consistent way. Its definition will be interpreted along the lines...

Topics: DTIC Archive, Ingolfsson,Ketill, WISCONSIN UNIV-MADISON MATHEMATICS RESEARCH CENTER, *RESONANCE,...

The search for a Grand Unified Theory in quantum physics has led to the postulation of a so-called 'fifth force' and the so-far-undetected particle associated with propagation of this field. Concurrently, recent geophysical evidence suggests slight deviation of measured 'gravitational' attraction from Newton's inverse square formulation. The possibility of detecting this anomalous 'force' has spawned the 'tower experiment,' in progress by the AFGL. In this experiment, deviation of measurements...

Topics: DTIC Archive, Walker, Richard C, AIR FORCE GEOPHYSICS LAB HANSCOM AFB MA, *EARTH MODELS, *GRAVITY...

By analyzing the photoelectron energies in several systems, it has been demonstrated that multiphoton ionization (MPI) can selectively produce molecular ions predominantly in a single vibrational level by the proper choice of the laser wavelength employed. Thus MPI provides a powerful new technique for producing high densities of internally state-selected reagent ion for chemical reaction dynamics studies. This approach is being taken for studying the ion-molecule reactions of NH3(+) (v) which...

Topics: DTIC Archive, Morrison,R J S, STANFORD UNIV CA DEPT OF CHEMISTRY, *REACTION KINETICS,...

Briefly summarized is all the work that has been performed in this final report. The major accomplishments were (i) the determination of trends in defect concentration in III-V and II-VI semiconductors, and (ii) the development and deployment of a novel quantum molecular dynamics method which is far faster and can handle larger systems than any competing method. These topics will be marked with a **** to indicate their importance. The topics are: (1) Deep electronic levels of large chalcogenide...

Topics: DTIC Archive, Sankey, Otto F, ARIZONA STATE UNIV TEMPE DEPT OF PHYSICS, *ELECTRON ENERGY, *CRYSTAL...

The effort here included design, modeling, fabrication, and characterization of lateral resonant tunneling and quantum point contact structures. Also included was a theoretical investigation of open quantum systems driven far from equilibrium, with emphasis on appropriate boundary conditions for solution of such systems. Accomplishments under this contract include the publication in Reviews of Modern Physics of the results of this foundational study, as well as the development of a...

Topics: DTIC Archive, Bate, R T, TEXAS INSTRUMENTS INC DALLAS, *CONDUCTIVITY, THEORY, TRANSCONDUCTANCE,...

Topics: DTIC Archive, Matviyenko, Gregory, YALE UNIV NEW HAVEN CT DEPT OF COMPUTER SCIENCE, *POLYNOMIALS,...

Topics: DTIC Archive, OPTICAL SOCIETY OF AMERICA WASHINGTON DC, *SYMPOSIA, *ELECTROOPTICS, *QUANTUM...

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5.0

Oct 27, 2020
10/20

by
French-German Encounter in Mathematics and Physics (2nd : 1983 : Marseille, France)

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viii, 227 pages : 25 cm

Topics: Stochastic processes -- Congresses, Quantum theory -- Congresses, Processus stochastiques --...

Work completed under this grant on polar fluids includes an extension of perturbation theory to polar molecules with point octopoles and hexadecapoles as well as a preliminary investigation of molecules with non-spherical cores. In addition, the ordering of dipolar molecules near a flat electrified wall has been investigated in the linearized hypernetted chain (LHNC) and quadratic hypernetted chain (QHNC) approximations. This has led to a new study of electrostriction and non-linear effects in...

Topics: DTIC Archive, Rasaiah, Jayendran C, MAINE UNIV AT ORONO, *PERTURBATIONS, *FLUID DYNAMICS,...

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140

Nov 21, 2011
11/11

by
Weisbecker, A. C. (Alan C.)

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"A Vintage original"--T.p. verso

Topics: Drug traffic, Quantum theory, Colombia, Physics, Dogs

698
698

May 21, 2011
05/11

by
Olsen, Larry C

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Betavoltaic energy conversion refers to the generation of power by coupling a beta source to a semiconductor junction device. The theory of betavoltaic energy conversion and some past studies of the subject are briefly reviewed. Calculations of limiting efficiencies for semiconductor cells versus bandgap are presented along with specific studies for Pm-147 and Ni-63 fueled devices. The approach used for fabricating Pm-147 fueled batteries by the author in the early 1970's is reviewed. Finally,...

Topics: CORRELATION, EIGENVECTORS, GEOMETRY, HEISENBERG THEORY, HILBERT SPACE, QUANTUM THEORY, HAMILTONIAN...

It was recently proposed that the Euclidian norm of the t sub 1 vector of the coupled cluster wave function (normalized by the number of electrons included in the correlation procedure) could be used to determine whether a single-reference-based electron correlation procedure is appropriate. This diagnostic, T sub 1, is defined for use with self consistent field molecular orbitals and is invariant to the same orbital rotations as the coupled cluster energy. T sub 1 is investigated for several...

Topics: NASA Technical Reports Server (NTRS), ELECTRON DENSITY (CONCENTRATION), MOLECULAR ORBITALS,...